What are the three types of chromosomes as to centromere location? Describe each.
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On the basis of the location of the centromere, chromosomes are classified into four types: metacentric, submetacentric, acrocentric, and telocentric. As previously mentioned, the centromere is easily visualized as the most constricted region of a condensed mitotic chromosome.
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The type of chromosomes based on the position of centromere are of the following four types :
1) Metacentric chromosome: centromere in middle forming two equal arms.
2) Sub-metacentric chromosome: centromere placed near to one end resulting in one shorter and one long arm.
3) Acrocentric chromosome: Centromere placed close to one end forming one extreme short and one extreme long arm.
4) Telocentric chromosome: terminally placed centromere.
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